In third direction-To keep linear functional norm which is determined in Banach space, its continuation was proved by solitariness condition.
Lastly in fourth direction, normality condition of linear differential operators was extracted.
[2] In 1960, Rasulov received the Doctor of Sciences degree in the Scientific Council of Mathematics University.
"Method of contour integration" monograph was written by Majid Rasulov and it was published in 1964 in Moscow.
"[2] In 1967 "Method of contour integration" monograph was translated to English language by order of England Mathematics Society and it was published in Canada, USA, Netherlands.